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In order to produce a good F1 hybrid variety in wheat, it is necessary to explore a new male-sterile cytoplasm and its nuclear restore gene. Four alloplasmic male sterile lines of wheat with Aegilops cytoplasm were developed to identify mitochondrial DNA variation that could potentially be associated with cytoplasmic male sterility.

在杂交小麦选育中，为了更好地利用细胞质雄性不育性，研究与不断挖掘新的不育细胞质类型及其对应育性恢复基因以改良现有不育资源至关重要。

Nineteen alloplasmic common wheats whose origins of cytoplasm are Aegilops and nuclear donor F94-111 were taken as study materials, the flag leaf area, net photosynthetic rate of flag leaf were measured and relative Chl. content of flag leaf, and genetic effects of Aegilops cytoplasm were studied. Ae. Squarrosa, Ae.

以19种不同山羊草细胞质异质系与其核供体普通小麦F94-111为材料，测定其旗叶叶面积、净光合速率和叶绿素相对含量，研究不同山羊草细胞质对普通小麦光合性状的遗传效应。

The results shown that:(1) Bufo raddei Strauch tadpole was capable of lens regeneration, which originated from the epithelial cells at dorsal iris margin by depigmentation.(2) Depigmentation of Bufo raddei Strauch during lens regeneration was by two methods: First, pigment granules initially dispersed all over the cytoplasm were moved towards the periphery of the cell, and then were directly taken up by the amoeboid cells. Second, pigment granules in a cell were first crowded in a mass, surrounded by a membranous structure in the cytoplasm, which were eventually discharged as a mass from the cell.

结果表明：花背蟾蜍蝌蚪(1)具有晶状体再生的能力，其晶状体的再生来源于虹膜背缘的上皮细胞；(2)虹膜背缘去色素是转分化的前提，主要有两种方式：一种也是最主要的方式是在晶状体被摘除后虹膜外侧产生巨噬细胞，巨噬细胞吞噬虹膜色素上皮细胞中的色素颗粒；另一种方式是虹膜色素上皮细胞自身释放色素颗粒；(3)电镜观察发现虹膜色素上皮细胞转分化过程中线粒体有明显变化，核糖体增多，粗面内质网增多，晶状体纤维分化过程中细胞核逐渐凝聚。

Grew on the normal temperature, it was shown that the deposits of calcium antimonate being the indicator for Ca(superscript 2+) localization mainly concentrated within the vacuoles and intercellular spaces and there was also some Ca(superscript 2+) deposits in cell walls. But when Garyota urens L. was treated by the temperature of 2℃ for 48 h, the level of Ca(superscript 2+) increased in cytoplasm and plasma membrane, but decreased in vacuoles and intercellular spaces considerably. At the same time, the ultrastructure of chloroplasts suffered from chilling: the membrane of chloroplasts had been damaged, the layer of thylakoids was exiguous and unclear, the photosynthetic rate decreased evidently. And when Garyota urens L. was treated by the temperature of 2℃ for 120 h, the deposits of Ca(superscript 2+) mainly concentrated within the cytoplasm, nucleus and plasma membrane and there was also some Ca(superscript 2+) deposits in vacuoles, and the ultrastructure of some cells was simultaneously damaged severely: Chloroplasts structure, vacuole membrane and nuclear membrane had been damaged fully, the structure within the cell had become unclear, and the cell only have respiration.

研究结果表明，未经低温处理的董棕幼苗叶肉细胞，焦锑酸钙沉淀颗粒大量出现在液泡和细胞间隙中，细胞壁中也可见少量沉淀，而细胞基质中则看不到焦锑酸钙沉淀；经2℃ 48 h低温处理后，细胞基质和细胞膜上焦锑酸钙沉淀增加，而液泡和细胞间隙中的焦锑酸钙沉淀则显著减少，并且超微结构已初步显示出寒害的特徵，叶绿体外膜部分破损，类囊体片层稀疏且排列不规则，光合速率明显下降等；经2℃ 120 h低温处理后，细胞间隙内的焦锑酸钙沉淀极少，有的也紧贴在细胞外壁上，而细胞基质和细胞膜上则分布有非常多的焦锑酸钙沉淀，在核基质和液泡中也可见到少量的焦锑酸钙沉淀，并且超微结构遭到了显著破坏，叶绿体结构完全被破坏，核膜与液泡膜严重破损，内部结构模糊，细胞只表现为呼吸作用，不进行光合作用。

The ultrastructure characters of pollen grain in Brassica napus are:1There are vacuoles in cytoplasm but no starch grain in uniceelluar pollengrain.2The veget- ative nucleus of bicellular pollen grain is generally spheroidal;while the generative cell is spinde-shaped,with a big nucleus,thin layer of cytoplasmand few cell orgens,no cell wall.3In three-celled pollen grain the sperm cell is separated from the cytoplasm of vegetative cell by two layers of plasmic membrances.

Brassica napus的花粉粒，在不同发育时期超微结构的特征如下：1单胞花粉粒有一个球形的细胞核和明显的核仁，细胞质内出现液泡，缺少典型的淀粉粒。2双胞花粉粒的营养核多为球形。生殖细胞纺锤形，无细胞壁，细胞核比例大，细胞质呈薄层，细胞器少。3三胞花粉粒有一个裂片状的营养核和两个纺锤形的精细胞，精细胞无壁，以两层质膜与营养细胞的细胞质相隔。

When seedling of corn inbreds were inoculated with isolates 76-527,76-528, 76-529 of Helminthosporium maydis in the greenhouse, the seed-lings of inbred lines with T male sterile cytoplasm were more susceptiblethan those with normal (non-sterile) cytoplasm.

从我国不同地区采集的玉米小斑病菌，通过温室苗期接种鉴定，及其产生的毒素对玉米种子根的抑制作用，发现76-527、76-528和76-529三个分离菌系在T型细胞质雄性不育系幼苗上产生萎蔫型大病斑，而在相对应的正常系以及M、C、CA、EK、D、PS型细胞质雄性不育系幼苗上则产生坏死型小病斑。

The pseudorabies virus strain invaded epithelial cell, neurocyte and lymphocyte, and existed in cytoplasm and karyon of infected cells widely,mostly in cytoplasm.

病毒存在于被感染细胞的细胞质和细胞核内，以细胞质为主。

Following PAS staining, glycogen in hepatoma carcinoma cells mainly expressed near to unilateral cytoplasm surrounding nuclei, showing strong positive expression in the positive control group. Big karyoplasmic ratio and weak expression of glycogen in cytoplasm were visible in the embryonic hepatic progenitor cell group.

PAS染色后阳性对照组肝癌细胞的糖原主要表达在靠近一侧的核周边胞质内，呈强阳性；而胚胎肝前体细胞诱导组，核浆比例大，部分细胞胞质内可见较弱的糖原表达，充满胞质。

Morphologically, the macrophages treated with NO and O-LDL presented shrinkage, nucleus fragmentation, and cytoplasm condensation; DNA ladder was visualized by agarose gel electrophoresis; Characteristic apoptosis peak of macrophages was showed by flow cytometry; Ultrastructure, The chromatin condensed and marginated to form dense chromatin fragmentation; The cytoplasm concentrated and vacuolized; The lysosomes and mitochondria of apoptosis macrophages increased clearly.

电镜观察超微结构变化：染色质固缩边聚，形成致密、均质的染色质块，胞质浓缩、电子密度升高并空泡化；凋亡巨噬细胞溶酶体、线粒体增多；细胞突起缩短减少，但巨噬细胞特有的板状伪足不消失。

The mature egg cell was an inactive cell with only a few polysomes. At the early zygote stage, a large number of ribosomal precursors were produced by the nucleolus, and many polysomes appeared in the cytoplasm, which suggests a high level of metabolism. Zygote at the dormancy stage had a small nucleolus and marked decrease in ribosomes, as shown by a few polysomes, which suggests decreased metabolism. Zygotes in the prophase of mitosis and two-celled proembryo became active again in metabolism, for a prominent nucleolus, high density of ribosomes and increased number of polysomes in the cytoplasm.

结果如下：在成熟卵细胞中多聚核糖体数量不多，且细胞代谢活性较弱；初期合子内，核仁大量合成核糖体前体物质，胞质中多聚核糖体数目众多，细胞代谢活性较强；休眠期合子的核仁变小，胞质中核糖体数量急剧减少，仅有少量多聚核糖体，细胞代谢活性较弱；合子分裂前期和二细胞原胚期，核仁显著，胞质中核糖体的密度增加，出现大量多聚核糖体，细胞代谢活性较强。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。